hi stevesr0 - when you said "make a phone call with google talk" - I assumed you meant google voice.
but if I read that wrong (if so, sorry) and you did mean gtalk: gtalk/gchat on android doesn't support the calling feature afaik. the only things I've seen that can do that are gmail's web interface (and it requires a platform-specific plugin), and pidgin client for linux (which can receive calls but not make them; pidgin for windows can't even do that just yet.) and probably a couple other desktop xmpp clients (e.g. various pidgin branches/forks)
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